EveryMinuteStrategy

# EveryMinuteStrategy - trade on every single 1m candle
# Purpose: test Feishu webhook notifications

from pandas import DataFrame
from freqtrade.strategy import IStrategy
from datetime import datetime, timezone


class EveryMinuteStrategy(IStrategy):
    """
    每根K线交易一次 — 收到新K线开仓，马上平仓。
    专门用来测试飞书通知是否正常。
    """

    INTERFACE_VERSION = 3
    timeframe = '1m'
    can_short = True

    # Exit immediately — don't wait
    minimal_roi = {"0": 0.0000001}

    # Tiny stoploss to force exit if no profit
    stoploss = -0.0001

    # 1 trade at a time
    max_open_trades = 1

    # Don't need historical candles
    startup_candle_count = 2
    process_only_new_candles = False

    def populate_indicators(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        dataframe['buy_signal'] = 1
        return dataframe

    def populate_entry_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        # Enter on every single candle
        dataframe.loc[
            (dataframe['buy_signal'] == 1),
            ['enter_long', 'enter_tag']
        ] = (1, 'minute_entry')
        return dataframe

    def populate_exit_trend(self, dataframe: DataFrame, metadata: dict) -> DataFrame:
        # Don't exit by signal — let minimal_roi / custom_exit handle it
        return dataframe

    def custom_exit(self, pair: str, trade, current_time, current_rate, current_profit, **kwargs):
        # Exit 3 seconds after opening — generates both entry_fill and exit_fill notifications
        if (current_time - trade.open_date_utc).total_seconds() > 3:
            return 'instant_exit'
        return None